19
Subject to technical amendments without prior notice | 83070100bUK | ait-deutschland GmbH
13
Volumetric flow meter /
Heat meter
The integrated volumetric flow meter / heat meter
(①)
is used to measure the heat quantity generated by the
heating system and made available for domestic hot
water preparation and building heating.
1
The volumetric flow meter / heat meter measures flow
and temperature difference in the charging circuit.
The measuring ranges are set in the heating and heat
pump controller HPC. Measured values can be read
out on the control panel display.
Heating and heat pump controller HPC operating
manual, menu 5.3.21
14 Malfunctions
14.1 Unlocking the safety temperature
limiter
A safety temperature limiter is installed in the electri-
cal switch box. If the heat pump fails or there is air in
the system:
►
Check whether the Reset button
(①)
on the safety
temperature limiter has tripped.
1
NOTE
The safety temperature limiter interrupts the
power supply from the electric heating mod-
ule when the temperature rises to approx.
98°C or drops below -8°C.
►
If the Reset button has tripped, press it again with
a little force using a small screwdriver.
►
If the safety temperature limiter trips again, con-
tact the local partner of the manufacturer or the
factory's customer service.
14.2 Alarm
Heating and heat pump controller HPC operating
manual, “Comfort malfunction” section
